Last week we talked about fusion, where atoms come together to form heavier elements. This week, everything comes apart as we talk about nuclear fission. How it occurs naturally in the Universe, and how it has been harnessed by science to produce power, and devastating weapons.
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So the supernova (or supernovae) that created all those very heavy unstable elements out there beyond the ‘Wall of Iron’. Which type was it? Type 2 or 1a? Is there an actual way to tell from the residual isotopic mix?